Users' questions

Why would you need a 30 amp breaker?

Why would you need a 30 amp breaker?

The 15-amp and 20-amp breakers are used for baseboard heating, the 30-amp breakers are used for water heating, the 40- and 50-amp breakers are used for electric ranges, and the 70-amp breakers are used for air conditioning.

What size breaker do I need for a ring main?

Ring circuits are normally fed with a 30 or 32 amp fuse or MCB, but if feed is supplied through a 4mm cable then the spurs could also be feed with 30 or 32 amp fuse or MCB.

What uses 30amp breaker?

Double-pole breaker The 15-amp and 20-amp breakers often handle baseboard heaters, 30-amp serve water heaters and electric dryers, 40- and 50-amp are for electric ranges, and the 70-amp could serve a large air conditioner or a subpanel.

Can I replace a 30 amp breaker with a 60 amp breaker?

Whatever operating margin that second breaker would allow continued current to flow to the load overrating the 30A conductor on that half of the circuit. So do this right and install a 60A breaker and new wiring suitable for 60A circuit. The issue isn’t the breaker – that’s the easy part – it’s the wire.

Is a double pole 30 amp breaker 60 amps?

Single-pole breakers are rated for 120 volts and 15 or 20 amps. The breakers themselves are relatively narrow and occupy a single slot in the home’s breaker box. Double-pole breakers, on the other hand, are typically rated for 20 to 60 amps and supply 240-volt power to large appliances, like electric dryers and ranges.

How many amps can a 2.5 ring main take?

The cable used in domestic ring circuits is either 2.5sq mm or 4.0sq mm twin core and earth, these are rated (in free air) at 24amps or 32amps respectively. Each ring circuit is protected by a 32 amp fuse or trip fitted in the consumer unit.

How many fused spurs can be installed on a standard a1 Ring final circuit?

5. – The number of unfused spurs fed from the ring circuit must not exceed the number of sockets or fixed appliances connected directly in the ring. 6. – Each non-fused spur may feed no more than one single or one twin socket, or no more than one fixed appliance.

Do they make a single-pole 30 amp breaker?

Square D Homeline 30 Amp Single-Pole Circuit Breaker-HOM130CP – The Home Depot.

Can I use 12 gauge wire on a 30 amp circuit?

“Twelve-gauge wire is good for 20 amps, 10-gauge wire is good for 30 amps, 8-gauge is good for 40 amps, and 6-gauge is good for 55 amps,” and “The circuit breaker or fuse is always sized to protect the conductor [wire].”

How many amps can a 30 amp breaker handle?

30-Amp single pole means 30A at 120V. In the U.S. a 30A/120V circuit is quite rare. All residences get two poles (mostly 240V, some 208V), and all 120V circuits are either from a 20Amp or 15Amp (usually older) breakers.

Can you use a 15A receptacle on a 30A breaker?

Receptacles, switches, etc. – Everything needs to be rated to match. You can’t use a 15A or 20A receptacle on a 30A breaker because if you had an overloaded device (not planned – malfunctioning) that pulled 30A, it would melt the receptacle but the breaker wouldn’t trip to stop it.

How big should a ring main breaker be?

Where i’m going with this is i’m pretty new to the whole trade and don’t want to question the electrician they sent to fix it but i’m concerned that he has oversized the breaker. He’s replaced the broken 32A with a 40A the ring main is wired with bog standard 2.5mm T+E.

Why is my ring main breaker burnt out?

Recently I had an issue with a ring main in my flat either the circuit was over loaded or the connection at the breaker was poor. Either way it ended up with a burnt out breaker with black scorch marks on the top and melted cables by the breaker.

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