Bought a APC J25B, power question - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
Thread Tools
post #1 of 2 Old 08-31-2013, 12:56 AM - Thread Starter
Fernanmd's Avatar
Join Date: Oct 2010
Posts: 22
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 10
So I have the APC J25B power conditioner/surge protector. My question is will I be overloading it if I have a Panasonic 65ST60 TV and Denon AVR-3313 connected to it. I also want to have a few more devices connected to it like a modem, wireless router and cable box.

I don't know if I'm doing this right but I added up the power consumption of the Panny which is 453 watts and the Denon is 670 watts, so that's 1,123watts. The APC J 25B max output power capacity is 865 watts.

Or, should I be looking at the 1500VA spec. I don't even know how to get the numbers of each device to figure that out.
Fernanmd is offline  
Sponsored Links
post #2 of 2 Old 08-31-2013, 07:39 AM
AVS Forum Special Member
holl_ands's Avatar
Join Date: Jun 2004
Location: San Diego, CA
Posts: 5,160
Mentioned: 17 Post(s)
Tagged: 1 Thread(s)
Quoted: 574 Post(s)
Liked: 253
Volt-Amps (VA) is a fictitious spec number if the load was highly capacitive (e.g. AVR power on transient) or highly inductive (e.g. a motor)....neither is typically found in home Audio-Visual equipments after the power on transients:

You want to start with the LOWER value of 865 Watts.....and a good Engineer with then DERATE (reduce) that number by as much as 50% to allow for 1) degradation of the backup battery over time, 2) reduction of heat in the APC to ensure long term reliability, esp. if ambient temperature can exceed the manu's assumed max temp for their rated power spec number (NOT in their specs), 3) higher power levels are to be expected when AVR's (and other) equipments turn on (NOT in most specs & APC doesn't address transient power ratings) and 4) longer backup time (12 min at half load rather than only 4 min).

I wouldn't attach any more than about 450 to 600 Watts total, depending on how conservative a posture you want to adopt....or live life on the edge and worry every day about the whole shebang melting down...

Every piece of electronic equipment is mandated to have a label stating the amount of power used.....and you can't always rely on Spec Sheets and User Manuals. If you only see it expressed in VA, it's probably the SAME value in Watts.
holl_ands is offline  
Sponsored Links
Reply HDTV Technical

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off