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Old 01-10-2010, 09:33 AM   #1
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Location: Florida
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electrical fuse panel

We did a room addition and the electrician ran some new wires to it and then replaced some of the old wiring. Also installed a bigger elec panel in the hallway. I notice now that the furnace fuse gets warm or slightly hot when the furnace is running (AC) unit and fan inside the hallway for heat. Can someone tell me if this is normal? Also we have a tankless water heater Bosch and the fuse is right beside the furnace fuse. The furnace fuse is 60 amp? and the water heater is 80 amp.(tankless) I noticed the water heater is kicking off when we take a shower in this cold weather lately. I switch it back on and it will run for a short while , so I turned the heat down on the water heater and it seems it stays on ok so far. Should this be expected? Hope there is an electrician out there. Thanks very much.

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Old 01-10-2010, 09:39 AM   #2
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electrical fuse panel

This should not be happening. If the unit is rated at 80 amps then at least a 100 amp circuit should have been used. Electrical work calls for a permit. What did the inspector say? If you did not get a permit,call the electrician to fix this or you will call the inspector. Which will create trouble for the electrician (if he is one).

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Old 01-10-2010, 10:18 AM   #3
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Location: South of Boston, MA
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electrical fuse panel

Bigger electric panel in the hallway-Is this the Main panel or a sub-panel ?
How big is this panel ? 100a, 200a ? What runs off of it ?

What is your serice rating...200a ?

The Bosch Tankless WH has a fuse (or breaker) rated at 60a ?
Is this the only fuse/breaker going to the WH ?
But then you say the WH is 80a ?
Where are you getting this info ?

What is kicking off ?
The 60a fuse/breaker ?
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Old 01-10-2010, 11:09 AM   #4
Join Date: Jan 2010
Location: Florida
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electrical fuse panel

It is the main circuit breaker. The fuse going to the water heater (tankless) is showing 80, the one going to the furnace is showing 60. I am trying to read the writing on the large circuit breaker installed and don't really know what I am reading. It says as main - 125 to 200 2pole, 125 to 240 3pole, etc. The 80 for the water heater is kicking off. I pull it to off and then back to on and the water heater works. Is it something to worry about? Also the furnace 60 gets fairly warm in this cold weather.
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Old 01-10-2010, 11:20 AM   #5
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Location: Baltimore, MD
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electrical fuse panel

Can you take a picture of the main panel?
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