200amp vs 300amp
aj33
11 years ago
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aj33
11 years agoRelated Discussions
new 200 amp service
Comments (5)Thanks for the info. I stopped by the electrical aisle at Home Depot while picking up some other supplies, and they happened to have a mock up of the exact system I'm planning. I'm all set now, except for 2 questions: 1. Nearly all of my water piping in the house has been converted to PEX. There are some remaining bits of galvanized pipe scattered throughout the basement. Should I run a #4awg copper wire to one of these pieces of pipe? 2. I will use 4/0 4/0 4/0 2/0 Al cable to feed the subpanel. It will need to go down from the meter/main panel about 3 feet then enter the side of the house through the rim joist. Should the exterior run be enclosed in condit for protection? If so, since the interior portion will not be in conduit, do I just need a cable clamp or something where the cable exits the conduit? Thanks again....See MoreJunction Box vs Subpanel
Comments (5)The NEC has special provisions for mobile homes. By code you had a to have disconnecing means within either 25' or 35' of the home (can't remember which). So that part is correct. Myself and other mobile home park owners had a real battle with our State chief inspector and the department's legal force. They insisted that we could not put disconnects at the power pole (which included the meter). It seemed kind of stupid to us because then the wire from the pole to the disconnect outside the home had no overcurrent protection, but they insisted this was their interpretation of the code. You might know it, the first park that we call for an inspection on, the local POCO refuses to energize without disconnects at the meter. They claimed that they had jurisdiction and they wanted the disconnects. As far as I know, none ever got done without the disconnect at the pole/meter regarlsess of what the State wanted....See MoreUpgrade service entrance to 300 amps?
Comments (9)I beleive you are talking about 2 very different things. Upgrading your whole service to 300 amps would be increasing the overall current carrying capacity of your entire service to 300 amps. This would equal for example litteraly 600 amps of 120 volt load. Very seldom is this necessary. The reason some homes have such a large service is for the number of circuits needed. Each service panel regardless of size have a limited number of spaces. With homes getting bigger they need more circuits. The other option is to have a sub panel fed from a seperate 100amp breaker in the original panel. This would give you the needed additional circuits and keep your overall service size to 200 amps. I see you also have a generator. For example I have a newer 2000+sq' home with many electric appliances. I installed a power meter to record my total load for sizing my own generator. After trying to run everything at once my highest load on either leg was 88 amps. You dont need a 300amp service in my opinion. you need breaker space. Stay with the 200 amp main panel with a 100 amp sub panel. Keep in mind not all of your electric items are on at any one time. They cycle so the total load is not real large unless you have a large electric heating load such as heatpump or other large home heating appliances...See More200 amp upgrade
Comments (1)I mean no offense by this comment, but it strikes me that you really need more than the answer to this question. The entirety of the current service needs to be evaluated by a professional before attempting a DIY upgrade. This is especially true because it is a multiple unit dwelling. My guess -- and this is no more than guesswork -- is that two "very old panels", each of which are on 40-amp breakers, are very likely 60-amp panels. If that is the case, they cannot safely handle 100 amps, much less 200....See MoreUser
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