answersLogoWhite

0


Best Answer

Typically the silver screws are neutral, the brass screws are for "hot" (if there are silver screws)

There are two on each side because that gives you options.

You can feed into the plug box and connect to one pair of screws, then subfeed the next circuit using the other pair.

OR

you can separate the circuits so that the top and bottom halves of the plug are either on a separate circuit or one half can be on a switch. The options are there if you want to use them. To separate the top and bottom half you'd need to break away the jumper between the top and bottom halves of the plug.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why does a non grounded plug have four screws for two wires?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Natural Sciences

How do you install a 110 volt plug?

I'm first off assuming this is a brand new plug, not a replacement. Okay. Ground first(green). Make sure you've got enough bare copper to wrap around the bottom screw. Then, strip and wrap the white around either of the silver screws on the side of the outlet. Finally, connect the black to the hot side (brass colored screws). And you should be all set.


How do you wire an Italian electrical plug?

The modern standard Italian 230/240V grounded household plug is the Type F CEE 7/4 (German "Schuko" 16 A/250 V grounded) plug. This is a symmetrical plug with grounding clips on the sides and Live/neutral on the pins- as the plug is symmetrical, the location of L(black or brown) and N (blue) wires is "Don't Care" and can be either. The ground (yellow-green) is connected to the side plates. The E/F hybrid configuration is asymmetrical (polarized) the ground hole on the plug makes it impossible to insert the plug into an F type socket with a grounding pin in more than one way. Insertion into an E type socket is ambiguous so the N and L conductors may be interchanged in the E socket.


What do you do with the extra alternator wire on the 1986 Ford Escort plug there are four wires and new alternator plug has three?

I assume your talking about the rectangular plug right at the alternator, and that your new Alt came with a short repair harness, the 2 heavy wires are BAT and the slim and likely white one is Tachometer AC sense, likely that 3 of the old ones were Bat test the old connector with a test light to see which of them have power to them.


Configuration for 50 amp dryer plug with black white and green wires?

There is no configuration with that amount of wires. Proper connection requires three wires and a ground.


What if you have four wires running to your dryer outlet and the outlet is only a three prong one wire is just hanging out is this really even safe?

Have the outlet changed to match the configuration of the dryer plug.

Related questions

How is a german plug wired?

you put the wires under the screws and tighten them


Oldsmobile Intrigue rear Speaker Removal Instruction?

remove the speaker covers from fear deck. remove the four screws that hold the speakers in the rear deck. four screws hold each speaker in place. unplug the wires from the connecters. if aftermarket speakers cut after plug and splice new speaker wires into existing factory wires. reverse the procedure to install new speakers.


Do you damage the module if you cross the spark plug wires?

No but, if you leave a plug wire disconnected and not grounded while running the engine, you can damage the ignition module.


How do you replace an Acura Integra distributor?

Unplug all the spark plug wires. then loosen the screws holding the distributor on, remove it, put the new one on and screw it in, then replace the spark plug wires


How do replace blower motor resistor on 1998 civic hatchback?

Remove your glove compartment. Look to the right side inside. Look for 2 screws, remove 2 screws. Lift up on wires, unplug wires from resistor. Plug in new resistor into wires. Screw the screws back in, reinstall glove compartment.


How to change coil pack on 1987 Chevy Celebrity?

The coils are held in place with two small screws. Remove the spark plug wires making note of where each wire goes, then remove the screws and pull the coil straight out. To replace the coil line up the connectors and push the coil in place, then put the screws back in and reconnect the spark plug wires.


Where is the spark plug wires on a 2000 Kia Spectra?

The spark plugs and wires are under the cover plate on top of the engine. The cover is held on with six philps screws.


Where is the blow motor resistor on a Daewoo leganza?

Behind the glovebox toward the firewall, you will see a set of wires (4-I think) that pug into a plug with two small screws holding it in. This is it, remove the plug and screws and pull straight down.


How hard is it to change a distributor panel on a 1996 Chevy silverado 350 Vortec Z71?

Distributor panel?? If you mean distributor cap, you first move the air intake going to the throttle body. Mark all spark plugs wires with the correct plug and unplug each one at the spark plug. Next you will find 2 screws holding the distributor cap. Remove both screws and and lift off the cap and wires while the wires are still connected to the cap. Take the spark plug wires off and place them onto the new cap in the same position you removed them. Put new cap on and tighten the screws and replace the wires to the correct spark plug. You should replace the wires and rotor button when you do this also.


How do you replace the spark plugs for 2001 Daewoo Lanos?

Remove the 4 screws holding the top cover. You can then get to the plug wires and the plugs.


Where are the spark plugs on a 2007 Chevy Cobalt?

There is a plate on top of the engine with four Allen head screws, remove that and the plugs are there, you will need i belive a 10mm socket to take the plug wires off. This is how they are on a 2007 SS i am not sure about what model you have.


How do you know if spark plugs and wires are bad?

Take the spark plug out, push back into it's pocket, set the spark plug on a grounded piece of metal, have someone crank the engine while the spark plug is grounded (but don't hold onto the spark plug, common sense right?) if a spark appears between the little arm the spark plug works, if it doesn't spark, replace with a new plug, and if the new plug doesn't start you have a faulty wire.