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Electrical Wiring

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4,935 Questions

Can string conduct electricity?

Not unless its a string of some conductive material. Please be more specific on the actual type of string (what its made of).

Line read 20 amp different per phase to load?

The electrical term for this condition is called an unbalanced load.

Manual for the micronta ranger double multitester 22-204b?

Only link I can find is this: http://support.radioshack.com/support_meters/doc14/14076.htm

There is no owners manual available from radio shack for this model other than the above link.

What color should the High leg always be marked in?

Common wire colors for the U.S.

Bare or Green - Ground / Earth Ground

White - Neutral, labeled N

Black - 110VAC to 120VAC, labeled L1 or A or R

Red - 110VAC to 120VAC, labeled L2 or C or T

Blue - 208VAC to 240VAC, labeled L3 or B or S

Most phase rotation meters that I have seen must be UK in origin since they have different lead colors from the US, that match the UK convention:

Common UK wire colors

Bare or Green/Yellow stripe - Earth Ground

Black - Neutral

Red - L1

Yellow - L2

Blue - L3

Phase rotation meter tips:

1) Measure the voltage to determine L3, the third or wild phase, (also known to some as the stinger). This voltage will be 208V - 240V to Neutral. Connect L3 or B or S or Yellow lead to this wire/lug

2) Connect L1 or A or R or Red lead to one single phase wire/lug

3) Connect L2 or C or T or Blue lead to the other single phase wire/lug

Air conditioner blows circuit breaker when heating?

If you have a heat pump and the breaker blows in heat cycle then you probably also have auxiliary electric heat which is drawing too much current because of a faulty heater element.

Do 1 phase electric motors need starters?

it depends on the load and size of the motor

if the motor has to drive heavy loads from initial state it require more torque, for this we use star-delta starters

where load on motor in permissible then we use a DOL starters

DOL starters are direct supply feeders to the motor

so there is no rule to use a starter. we can use anything to swith the motor. for protection we need a overload relay

and you ask for a 1ph motor, i.e maximum 3hp motors are available

for less than 2 hp motor you can use a 6amp switch used in household or a 6amp mcb (includes overload).

for 3hp a 16 amp switch or a 10amp mcb is more than enough

Why two shunt trip coil joined in parallel in circuit breaker?

the C.B operation depends upon relay senses. in realy their is trip coil.

when ever fault occurs then change in c.t occures[current varies] due to that secondary current in c.t changes then magnetising field of trip coil is varies and then relay contacts open then c.b contacts open..........this is the impotance of TRIP COIL

Free Electra 43cc Mini Chopper manual?

what is the sequence to start electra 43cc mini chopper

How much did satellite Spunkit weigh?

Around 83-84 kilograms, 183lbs. And it's called Sputnik, not Spunkit ;)

What would happen if power lines were not well insulated?

If power lines were not well insulated, the risk of electrical leakage would increase, leading to energy loss and potential short circuits. This could cause electrical shocks to nearby individuals, damage to equipment, and even start fires. Additionally, uninsulated lines would be more susceptible to weather-related damage, increasing maintenance costs and compromising the reliability of the power supply. Overall, inadequate insulation poses significant safety hazards and operational challenges for electrical infrastructure.

Can electricity leak from a house causing higher power bills?

No. An electrical leak is an electrical ground. When any line grounds out, the circuit breaker will trip and shut the power off. With the power off the watt meter stops recording so that there is no billing at that time.

What can happen if a utility-sized electrical generator has an ungrounded neutral?

What you need to define is the statement "utility- sized electrical generator". It depends on what the generators output is used for as to the way it is internally wired. In some configurations there is no neutral to ground as in a Delta configuration.If the generator is configured for a Wye output and the neutral centre tap is not grounded there will be a floating voltage between the generator and the utility system ground. It is for this reason that the generator's neutral point is grounded to bring the floating voltage down to zero volts to ground.

What is galvanized iron pipe?

It is a metal pipe that was used before PVC and cpvc. I hate it, it know from closing shut whicjlh in turn well cause little to no water pressure. If ya go it, get it replaced. If you don't you'll be taking drip drop showers.

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Steel pipe coated with zinc metal (that is the galvinized part) which delays rusting.

Is inductive reactance considered when calculating power loss in AC cables?

No, because it is not loss - inductance by definition will cause reactive power which can be compensated for using capacitor banks (one example). I^2 * R losses (power loss through the cable) takes into account the resistance of the line.

What is fluorescent lamb?

Perhaps you are asking about fluorescent lamp. This is an electrical device that uses a fluorescent bulb to give off light. The bulb is a recent invention designed to give energy savings in the residential area. The fluorescent bulb used to be used exclusively in industrial applications, but the new bulb is small and compact enough to be used in a home lamp.