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The rating of the main switch is decided upon by the current incoming mains. The main switch can't be lower than the incoming. In order to upgrade the main switch, the breaker box will need a complete upgrade.

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Q: How do you decide on the rating of a main switch?
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Is 160 ohms reading on a switch bad?

For a switch the reading should be in the zero ohm range. Corrosion or pitted contacts will start to raise the resistance rating on a switch. This size of rating on the switch will start to raise the temperature of the switch because the switch starts to act like a load in the circuit.


WHAT ARE THE RATING OF RING MAIN UNIT?

The normal rating of a UK ring circuit in a domestic system using 2.5 mm2 cable in a ring is 30 amps.


What rating is called for in a non fussed disconnect switch between a Automatic Transfer Switch with a 400amp breaker 120 208v system and a generator that outputs 120 208v 3ph capacity 100KW 125KVA?

400 amps


What is the main purpose of SPST and DPST switches?

An SPST switch can break the connection or hold the connection depending on which switch your using.


Can you use a 10 amp switch to open a window in a 12 volt dc system?

No, you cannot use a 10 amp switch to open a window in a 12 volt DC system. This is because the switch would not be able to handle the current necessary to power the window motor. The amount of current required to open a window in a 12 volt DC system is typically much higher than 10 amps, and so the switch would not be able to cope with the load. In addition, the switch would not be able to sustain the current necessary to keep the window open, which could lead to the window becoming stuck in the open position. Furthermore, the switch would not be able to handle the circuit protection requirements necessary to keep the window safe. For these reasons, it is not recommended to use a 10 amp switch to open a window in a 12 volt DC system.

Related questions

How do you decide the rating of a switch for wiring?

Switch rating should match or be greater than the rating for the protecting breaker.


What if the wattage of the load is higher than the rating of the dimmer switch?

If the wattage load is higher that the rating of the dimmer switch then do not use the switch on that circuit. The manufacturer's components of the switch are only rated at a specific rating. Going higher than that rating will destroy the device and void any warranty that the switch might have. Always size the device to the load that you are wanting to control.


Maximum rating of a knife switch that can be opened under load?

Look on the inside cover of the switch for the specifications that are allowed by the manufacturer of the switch. A switch without arc chutes will have a very low rating.


Is 160 ohms reading on a switch bad?

For a switch the reading should be in the zero ohm range. Corrosion or pitted contacts will start to raise the resistance rating on a switch. This size of rating on the switch will start to raise the temperature of the switch because the switch starts to act like a load in the circuit.


What is the definition of sub main switch?

A switch subservient to the main switch, possibly on a sub-panel.


Where is the main switch connected?

the main switch is connected in the center of the panel


What is the definition of main switch?

Type your answer here... main switch is difine as the switch which opparate whole power throw the house.


How do you filter the rating of black ops?

go to options and switch it off


Who makes the ratings on video games...Like is there a company or something?

Yes it is the esrb game rating company that decide if the game should be the rating that it is


Can you use a 12 volt dimmer switch for a 240 volt ceiling rose?

No, the voltage rating of the switch is too low.


How do you wire a 20 amp 2hp motor with 220 single phase with a safety switch?

A safety switch does not provide overload or over current protection. The safety switch is positioned just before the motor and just after the motor protection equipment. To wire a safety switch, the line in from the motor protection goes to the top of the switch and the motor load connects to the bottom of the safety switch. The switch must have at minimum of a 240 volt rating and have an amperage rating of not less than 30 amps. Wire sizing for the connection will be #10 conductor which has a rating of 30 amps.


What does a layer 2 switch use to decide where to forward a received frame?

A layer 2 switch uses the MAC address to determine which port to switch the frame out of.