855-835-04-2 DC Electrical Load Analysis_

OWNER:

REVISIONS:

No: By: Date:

0 JHP 19-Sep-23 1 JHP 22-Sep-23 2 JHP 19-Oct-23

PREPARED BY:

DRAWN BY:

JHP

DATE:

09/19/23

REV:

2855-835-04 1 OF 3

16627 Fishhawk Blvd.

Suite 101

Lithia, FL 33547

(813) 654-9800 www.bmdinc.com

VESSEL:

RESEARCH VESSEL

DRAWING TITLE:

DC LOAD ANALYSIS & VOLTAGE DROP CALCS

DWG #: SHEET:

Michigan Department of Natural Resources Charlevoix Fisheries Research Station

96 Grant St.

Charlevoix, MI 49720

RELEASE FOR DESIGN PACKAGE

ADDED FURUNO SONAR; ADDED LOUD HAILER

CHG BATTERIES, ADDED INVERTER LOAD, ADDED NOTES 4 & 5

VOLTAGE DROP CALCULATIONS

Equipment Volts

(VDC)

Fuse/Bkr

(A) Load

(each) (A) Qty Load (A) Panel to

Equip (AWG)

Panel to Equip Length

(ft) * Battery to

Panel (AWG)

Battery to Panel Length

(ft) *

Total Voltage Drop

(%) ** AWG

Ohms / 1000 ft

18 6.385 Navigation lights 12 5 0.1 3 0.3 14 30 4 10 0.20% 16 4.016 Anchor light 12 5 0.3 1 0.3 14 20 4 10 0.11% 14 2.525

VHF 12 10 5.0 1 5.0 14 6 4 10 0.73% 12 1.588

VHF 12 10 5.0 1 5.0 14 6 4 10 0.73% 10 0.9989

Bilge pumps & alarms * 12 20 8.4 2 8.4 10 70 4 10 5.07% 8 0.6282 Grray water sumps * 12 5 3.5 1 3.5 14 80 4 10 5.96% 6 0.3951 Compass light 12 5 0.2 1 0.2 14 6 4 10 0.03% 4 0.2485 Pilothouse chart plotters 12 10 4.3 2 8.6 14 10 4 10 1.99% 2 0.1563 Lifter room chart plotter 12 10 4.3 1 4.3 14 30 4 10 2.80% 1 0.1239 Aft deck chart plotter 12 10 4.3 1 4.3 14 40 4 10 3.71% 1/0 0.09827 Digital radar 12 20 9.0 1 9.0 12 20 4 10 2.57% 2/0 0.07793 Doppler radar 12 10 2.5 1 2.5 14 20 4 10 1.10% 3/0 0.0618 Autopilot 12 10 1.4 1 1.4 14 6 4 10 0.21% 4/0 0.04901 AIS transponder 12 10 6.0 1 6.0 14 10 4 10 1.39% FLIR camera 12 20 5.0 1 5.0 12 10 4 10 0.77% Tank level indicator system 12 10 0.5 1 0.5 14 15 4 10 0.17% NMEA power supply 12 5 1.0 1 1.0 14 6 4 10 0.15% Furuno sonar 12 5 0.7 1 0.7 14 10 4 10 0.16% Loud hailer 12 15 5.0 1 5.0 14 20 4 10 2.21%

Engine alternator to start btty 24 - 80.0 2 80.0 1/0 10 - - 0.33% Engine alternator to house btty 24 - 80.0 2 80.0 1/0 80 - - 2.62% Gen alternator 12 - 50.0 1 50.0 1/0 10 - - 0.41% House battery charger 12 200 120.0 1 120.0 1/0 8 - - 0.79% House battery inverter 12 200 200.0 1 200.0 1/0 8 - - 1.31% Engine battery charger 12 60 45.0 1 45.0 4 20 - - 1.86% Gen battery charger 12 20 15.0 1 15.0 10 20 - - 2.50% Solar charger 12 60 50.0 1 50.0 4 8 - - 0.83%

*Circuit length estimates are the distance from each breaker panel to respective load and back to negative connection. For lines that have multiple items per line (e.g. lights), the distance shown is the longest distance. For circuits that only have one light per wire run, the load for a single light is shown. For circuits with "daisy chained" lights, the sum of all loads are shown.

**The voltage drop shown is a total of the voltage drop for the round trip from power source back to negative, which includes the panel feeder length and the circuit length.

Sheet 2 of 3

HOUSE BATTERY LOAD ANALYSIS

Demand Factor

Operating Load (A)

Demand Factor

Operating Load (A)

Demand Factor

Operating Load (A)

Navigation lights 3 12 0.1 0.30 0.00 0.0 1.00 0.3 1.00 0.3 Anchor light 1 12 0.3 0.25 0.00 0.0 0.00 0.0 0.00 0.0 VHF #1 (transmit) 1 12 5.0 5.00 0.00 0.0 0.30 1.5 1.00 5.0 VHF #2 (transmit) 1 12 5.0 5.00 0.00 0.0 0.10 0.5 0.00 0.0 Bilge pumps 2 12 8.4 16.80 0.10 1.7 0.10 1.7 1.00 16.8 Gray water sumps 2 12 3.5 7.00 0.80 5.6 0.20 1.4 0.00 0.0 Compass light 1 12 0.2 0.20 0.00 0.0 1.00 0.2 1.00 0.2 Chart plotters 4 12 4.3 17.20 0.25 4.3 0.50 8.6 0.50 8.6 Digital radar 1 12 9.00 9.00 0.00 0.0 0.80 7.2 1.00 9.0 Doppler radar 1 12 2.5 2.50 0.00 0.0 0.80 2.0 1.00 2.5 Autopilot 1 12 1.4 1.40 0.00 0.0 0.50 0.7 1.00 1.4 AIS transponder 1 12 6.0 6.00 0.00 0.0 1.00 6.0 1.00 6.0 FLIR camera 1 12 5.0 5.00 0.10 0.5 0.40 2.0 1.00 5.0 Tank level indicator system 1 12 0.5 0.50 1.00 0.5 1.00 0.5 1.00 0.5 NMEA power supply 1 12 1.0 1.00 1.00 1.0 1.00 1.0 1.00 1.0 Furuno sonar 1 12 0.7 0.70 0.00 0.0 0.00 0.0 1.00 0.7 Loud hailer 1 12 5.0 5.00 0.50 2.5 0.50 2.5 0.00 0.0 Inverter 1 12 200.0 200.00 0.00 0.0 0.00 0.0 *note 4 150.0

Totals: 282.9 A 16.1 A 36.1 A 207.0 A Comments:

1. The house battery bank consists of two Group 4D AGM 12V batteries

2. House battery bank is primarily charged by the main inverter/charger, as shown in the electrical system drawings.

3. House battery bank has two alternate charging systems: 1) port main engine 80A alternator, and 2) solar panels and solar charger.

4. Emergency condition load assumes approx. 1.6 kW of 110 VAC power usage in emergency condition, as shown in AC load analysis.

West Marine Group 4D AGM 198 AH each 380 RC each 760 RC both

1420 MCA each

At Dock Underway Emergency

Equipment Qty Volts

(VDC)

Load (Amp each) Load (total)

Sheet 3 of 3